A's activate reliever Ryan Cook from disabled list

Oakland Athletics pitcher Ryan Cook (48) throws in the eighth inning of their game against the Boston Red Sox at O.co Coliseum in Oakland, Calif., Friday, July 12, 2013. (Anda Chu/Bay Area News Group)
(ANDA CHU)

MINNEAPOLIS — The A's bullpen is back close to full strength with Monday morning's move to activate right-hander Ryan Cook from the disabled list before helping the Minnesota Twins open the season at Target Field.

To make room on the roster for Cook the A's optioned right-hander Evan Scribner to Triple-A Tacoma.

Cook, who has been the A's dominant right-handed setup man the last two seasons, reported to spring training with right shoulder tendinitis. While he was personally confident he would be ready for the opener last week, the A's took his progress slowly. He didn't pitch in a Cactus League game all spring.

After pitching in a handful of minor league spring games, Cook had a two-game rehabilitation assignment with Class-A Stockton on Thursday and Saturday, allowing two hits, two walks and two runs in 1.2 innings.

Scribner saw limited use during the first week of the season, retiring all four batters he faced. During the spring, he had an ERA of 5.25 with an opponents' batting average of .286.